Update README.md
slight refactor of 'importer' to allow usage external to HTMLImports
bootstrap immediately if document.readyState === 'complete'
also boostrap if in 'interactive' document.readyState
Remove readyState interactive clause, caused IE10 to fail.

This came from Issues #34. We'll need a test case in order to proceed with addressing the IE issue mentioned there.
buildbot.git no longer required
do not load external stylesheets that are not in element, support external stylesheets inside of <template>, factor out boostrap
put boostrapping code in it's own module
transfer parser functionality from CustomElements to HTMLImports for nodes outside of <element>: link rel, style tags are injected into maing document, script tags are eval'd
update loader dependencies
updated tests
experimentation with script-injection
merge from master
fix typo
Update source map syntax from //@ to //#
whitespace
 - load element stylesheets when in main document
 - detect <template>.content directly
 - add style link test
 - correct chai location.
Merge pull request #14 from Polymer/master

6/17 master -> stable